Structural joint.



l. KAHN.

STRUCTURAL JOINT. APPLICATION mw FEB. 6. |915.

Patented July 25, 1916.

2 SHEETS-SHEET l.

I. i i I www,

ULA-HANS WWMM l. KAHN.

STRUCTURAL JOINT.

APPLICATION FILED FEB. t., Isls.

1 ,1 92,207. Patented July 25, 1916.

2 SHEETS-SHEET 2.

SIMM/nto@ 'I ws W. l

@gna WMC MM UNITED STATES PATENT OFFICE.

JULIUS KAHN, OF YOUNGSTOWN, OHIO.

STRUCTURAL JOINT.

specification of Letters Patent. Patented July 25, 1916.

Application filed February 6, 1915. Serial No. 6,432.

vthe second with means for retaining a connector, in combination with aconnector adapted to be mounted on one of these structural members andextend through the slot rin the other, and a key Ato lock all the partsin position.

Tn the accompanyingr drawing, Figures 1 and 2.a.re perspective views oftwo of the structural members adapted t`o be joined by the connectorshown in Fig. 3 and the key shown in Fig. 4. Fig. 5 is a perspectiveview of two members thus connected. F-ig. G is a vertical centralsection thereof. Figs. '.7 and 8 are two perspective views of two otherembodiments of this invention. Figs. 9 and'lOare central verticalsections of the constructions shown in Figs. 7 and 8 respectively.c

Similar reference characters referto like partsA throughout the severalviews.

While the drawings show the members to be connected as channels, theinvention is not limited thereto, as any other structural members orforms, capable of beingV slotted and having stirrups or loops struck upfrom them may be employed. While one of the channels in eachconstruction is shown' of sufficient width between its flanges to reLneive the end of an adjacent channel, it is Jbvious that this is notnece'ary, for the appenmember in Fig. 7 is shown resting lgainst -theouter side of the transverse xhannel. In these constructions, one of thenembers 1 is formed with any' desired num- )er'of slots 2 through itsweb, spaced as nay be desired. The other member 3 has its .veb formedwith flat loops or stirrups 4 and t short longitudinal slot 5. Theflanges 6 if the member 1 are preferably spaced to :nugly [lt `the outersides of the flanges 7 if the member 3. The connector 8 is formed if aflat plate and has`an end 9 turned at in angle to its main 'portion andslots 10 roperly spaced, as hereinafter described.

The key 11 is preferably-formed with two arms, one usually narrower thanthe other.

When it is desired to unite two mcmbers 1 and 3 in such a, manner thatthe member 3 extends at right angles from any desired slot 2 in themember 1, as shown in Figs.l5

and 6, the connector 8 may be 'slipped through the loops 4,projectingbeyond the end of the member 3, and then inserted through aslot 2 .in the member 1.A The `key 11 is then inserted in the outer slot10 and driven down, drawing the member 3 against the member 1 andsecurely locking it in poe t sition. Or the connector may be insertedthrough a slot 2 in the member 1, as shown in Figs. 8 and 10, andthroughthe stirrups 4 of the member 3, the bent end i) lying 'flatagainst the web of the member 1, after which the key is inserted throughthe slot 5 1n the member 3 and the outer slot 10 in the connector anddriven in. In -the latter.

case, the member 3 fits between the flanges G of the member 1. Ease in'removing the key will determine whether the free arm of the key 11projects up or down.

It is evident that the slot 10 in the upright bar in Figs. 8 and 10 maybe so positioned, that when the key 11 is driven home, the sharp end ofthe downwardly extending arm of thiskey will engage or bite into the web1 of the other bar. This prevents the key 11 from working loose and alsoserves to give the upright bar a broad footing which extends from theweb 1 of this upright bar to the point of the downturned arm. Thisresists the tendency of the upnight bar to sway to the left, in Fig. 10,swaying to the right being resisted by vthe end 9 of the connector.

In Figs. 7 and 9, three members areshown united. The channels 1 and 3may be substantially similar and provided with stirrups and slots of thesame character as those vpreviously described. The body of the con- 5 bemodified as to proportions and details by those skilled in the artwithout departing from the spirit of my invention. This structural jointis of especial advantage in putting up temporary seaffolds and other 1'structures of similar nature.

I claimz- Y 1. In ametal structure, thecombination' of a plurality ofslotted flat-sided bars eiigaging at an a-ngle, a connector lyingagainst a fiat side of one. of the bars and extending through a. slot inanother and'having the extending end bent over to prevent movement outof said slot, and a tivo-armed key having one arm extending throughslots in the first bar and in the connector to force the hars together,the other arm extending into engagement with said Second mentioned ha r.

2. In a metal structure., the combination of a pair of channel bars, oneof said bars g5 having a transverse, slot through its web and the otherhaving a stirrup struck up from its web transversely to its flanges, aconnector extending'beneath said stirriip and through said slot, andmeans engaging the connector and one of said channels to force itagainst the other channel.

3. In a metal structure, the combination of a plurality of slottedflat-sided bars en gaging at an angle, a connector extending through aslot in one of the bars and lying flat against'the second, said secondbar having a stirrup struck therefrom by which the connector is held inposition, said connector i passing through between the sti`rrup and the4o rest of the bar, means on the connector for limiting its movement inone direction relative to one of `the bai's, and a tapering keyextending through slots in, said connector and second bar to draw thetwo bars tous gcther.

4. In a. metal structure, the, combination of a plurality of slottedbars engaging at an angle, a connector extending through a slot in oneof the bars, a plurality of alined stirrups struck from the other barwhereby the connector is held in sliding engagement with a side thereof,one end of the connector being formed to reventits movement relative tothe first ar, and a tapering key exi tending through slots in theconnector and in the second'bar to draw the bars together. 5. In a metalstructure, the combination of M aplurality of slotted bars engaging atan angle, a connector extending through a slot 60 in one of the bars andbeing held in sliding engagement with the side of the other bar, one endof the connector being formed to prevent its movement relative to thefirst bar, and a two-armed key having a tapering 60 arm extendingthrough slots in the connector and the second bar to draw the harstogether and having a second arm extending into engagement with thefirst bar at a distance from the point of engagement of said bars.'

6. The combination of a pair of structural members engaging at an angle,one having a transverse slot and the second having a `struck up stirrup,a connector extending beneath the stirrnp and through said slot, saidconnector including means whereby its niovenient through the slot in onedirection is limited, and a two-arined key having a wedge-shaped armengaging the connector and one. structural member to force it againstthe second and having another arm provided with a pointed end adapted toengage the second member a distanccfroin said slot.

7. ln a metal structure, the combination of .a pair of bars arranged onintersecting lines, one of thel ba rs having a stii-rup struck therefromand being perforated, the other Y bar also being perforated, and aconnector passing through between the stirrup and the rest of the firstmentioned bar and through the. perforation in the second bar, saidconnector having an opening therethrough, and a. wedge passing throughthe opening in the connector and through the perforation in the firstmentioned bar, whereby the bars are forced together.

8. In a metal structure, the combination of a pair of bars, arranged onintersecting lines, one of the bars having a stirrup strucl therefromand being perforated, the othei bar also being perforated, and aconnectoi passing through between thc stirriip and th( rest of the firstmentioned bar and througlthe perforation in the second bar, said con:nector having an opening therethrough, anc a two-armed wedge-member, onearm ol `which passes through the opening in thi connector and throughthe perforation in thi first mentioned bar, its other arm being ar:ranged to exert pressure on thc second men tioned bar at a point somedistance from .the perforation therein, whereby the bars ari forcedtogether and braced from swaying n respect to each other.

9. In a metal structure, the combinatiol of three bars, two of which arearranged oi a line that crosses the others, the last men tioned bar andone of the first mentione( bars being perforated, each of the first 4mentioned bars having a stirriip strucktherc from, a connector passingthrough betweei the stirrnps and the rest of the two first men tionedbars and through the perforation ii thef'other bar, and wedge meanspassim through the connector and through the hol in the perforated barof the two first men tioned bars whereby'the three bars are rig idlysecured together.

10. In combination three members, oneiin terposed between the other `twoandextend ing at an angle therefrom and being slotted transversely, oneof the other two members having a stirrup struck therefrom near its end,a connector passing through between the stirrup and the rest of themember and also passing through the slot in the interosed member, andprojecting beyond the atter, and a wedge engaging the projecting portionof the connector and the second of the two members between which theother member is interposed, said wedge serving to force the Yseveralmembers tightly together.

11. In a metal structure, the combination of three fiat-sided bars, twoof which are alined with each other on a line that crosses the third,the third bar and one of the two first mentioned bars being erforated,each of the two first mentioned vars including a stirrup struck from theflat side of the bar, a perforated connector passing through between thestirrups and the correspondin flat sides of the two first mentioned barsan through the perforation in the third bar, and a two-armed wedgepassing through the perforations in the connector and in the perforatedone of the two first mentioned bars, said wedge engaging the third barat a point removed somewhat from the erforation therein, whereby thebars are he d together and prevented from swaying.

12. In a metal tructure, the combination of two bars arranged onintersecting lines, the first having a fiat slotted side and the' secondhavingl a flat side and parallel flanges formed along the edges thereof,said flanges projecting in the same direction from the flat side, thesecond bar also having a stirrup struck therefrom and being erforated, aperforated connector passing t rough the -slot in the first bar andbetween the stirrup and the rest of the fiat side of the second bar,anda two-armed wedge, onek arm of which passes through the perforationin the comiector and the perforation in the second bar, the other armengaging the fiat side of the first bar at a point removed some distancefrom the slot therein, and on the same side of the slot as the flangeson the second bar extend, whereby the bars are held together and bracedagainst swaying.

13. In a metal structure, the combination of a plurality of bars, one ofwhich has a pair of spaced alined stirrups struck therefrom, said baralso being perforated between the stirrups, the other bar being slotted,a connector passing through between the alined stirrups and the rest ofthe first mentioned bar, said connector also passing through the slot inthe second mentioned bar and being perforated at a .plurality of points,and a wedge, the arrangement being such that, when the .connector ispassed through the stirrups in one direction, the wedge may be insertedthrough one of the perforations in the connector to force the arstogether, and when the connector is passed through the stirrups in theother direction, the wedge may be passed through another of theperforations in the connector and through the perforation between thestirrups to force the bars together, whereby an interchangeableconnection is formed.

In testimony whereof I sign this specilication in the presence of twosubscribing witnesses.

JULIUS KAHN.

Witnesses:

W. MERLE SMITH, Cms. W. BAKKER.

